10.22376/ijpbs.2019.10.1.p1-12 Volume 5 Issue 1 2014 (January - March) lessThan i greaterThan Haematococcus lessThan /i greaterThan lessThan i greaterThan pluvialis lessThan /i greaterThan is freshwater green algae having the neutraceutical values and very case sensitive to high temperature and pH. Many factors affect the growth and astaxanthin production of lessThan i greaterThan H. lessThan /i greaterThan lessThan i greaterThan pluvialis lessThan /i greaterThan in open pond system. This study dealt with the experiment carried out in closed conical flask with adequate essential nutrients and exposed to direct sunlight for the duration of 10 light lessThan b greaterThan / lessThan /b greaterThan 14 dark days. The outcome of this experiment revealed that all the environmental factors standardized and provided in correct ratio for the production of astaxanthin. This is the one of the most economical method of optimizing astaxanthin production through augmentation process because light plays a crucial role when compared to other internal and external factors in the synthesis of chlorophyll in turn converts into astaxanthin during maturation of the cell. Production of astaxanthin from lessThan i greaterThan H. pluvialis lessThan /i greaterThan depends on duration of direct light/dark exposure were been standardized and optimized. RAVI D., SARANYA R. AND PARTHASARATHY R. Haematococcus pluvialis, light source, microalgae, astaxanthin, augmentation, pH, temperature 1191-1197